Pokemon: Season 1, Episode 21

1 - 21: Bye Bye Butterfree

The gang are continuing on their journey on the way they see a group of Butterfree and Ash releases Butterfree to make pals with another Butterfree Butterfree then sees a pink Butterfree and falls in love with her then Team Rocket show up later and try to catch Pikachu but Pikachu lands on their chopper and they fly away again then Butterfree leaves Ash for the pink Butterfreee then Ash thinks of some good memories he and Butterfree had together.